The influence of environmental conditions on the reactivity

Individual reactivity is influenced by environmental conditions. The influence of environmental conditions on the reactivity is cyclic, the body responds to natural cyclical environmental conditions with reactivity parameters fluctuations - biological rhythms that have developed evolutionarily. There are about 300 of rhythmic swing reactivity parameters. There are known, in particular, the circadian rhythms with a period of 20-28 hours. On their base, as well as on the base of seasonal rhythms, sensitivity to nature photoperiodic phenomena lies (ALChizhevsky, 1935), which in the natural rhythm of pineal melatonin secretion controls basic biorhythms of the reactivity integrative apparatus. It is shown that the violation of the light regime, excess light all day long, microwaves, radio waves, electromagnetic fields and ionizing radiation inhibit the production of melatonin and increases in such way the risk of carcinogenesis in breast and prostate. Thus, leaving of natural biorhythms intact defines preservation of normal reactivity. Furthermore, the level of functional activity of the central nervous system, endocrine and immune systems are not the same in different life periods, in different seasons, at different times of day, which also determines the reactivity. Direct sunlight, the sharp change in the weather, sudden atmospheric fluctuations disrupt regulatory mechanisms. There is the evidence that in periods of extreme weather events the number of mental disorders, crime and suicide rates is increasing, children in school are getting more bad grades, the number of calls for urgent medical reasons ("black bars") and the number of complications after surgery also increases.

Thus, if living organisms, including people, adapted to the impacts of natural factors during the long history of its development, the human’s adaptation to the influence of artificial factors is little and his reaction might be different - from small deviations of reactivity and health to disease and even death. Environmental factors, "experience" gained by the body during ontogeny, have a significant effect, imposing a possible impact on the level of response, for example, after an illness the immunity can remain, and a body will response to repeated penetration of the pathogen in a different way.

Date: 2015-01-11; view: 772